Portable sound machine



FIG. 1 is a perspective view of a portable sound machine showing my design, as viewed from the top and front.

FIG. 2 is a back profile view thereof.

FIG. 3 is a front profile view thereof.

FIG. 4 is a first side profile view thereof.

FIG. 5 is an opposite second side profile view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The details shown in broken lines illustrate features that form no part of the claimed design. 

CLAIM The ornamental design for a portable sound machine, as shown and described. 